/Engine/Source/Runtime/Engine/Classes/Particles/ParticleSystemComponent.h
Sets the defining data for all trails in this component.
void SetTrailSourceData ( [FName](API\Runtime\Core\UObject\FName) InFirstSocketName, [FName](API\Runtime\Core\UObject\FName) InSecondSocketName, ETrailWidthMode InWidthMode, float InWidth )